GENERAL PUMP A member of the Interpump Group
R3LP/230
Pressure Regulating Valve
I STALLATIO A D I STRUCTIO S FOR USE
1. GE ERAL I FORMATIO
1.1 The R3LP/230 pressure regulator is a manually adjustable,
pressure operated devices, which, according to
its setting, limits the pumps/system pressure by conveying the
excess of water to the by-pass. oreover, when the outlet flow is
blocked, this device totally releases the flow, thus keeping the
pump/system at the adjusted pressure.
1.2 Since the R3LP/230 valve is used in conjunction with a high
pressure water pump/system, which shall be called
hereafter only “system”, installation and use must be suited to the
type of system used and comply with the safety regulations in
force in the country where the valve is used.
1.3 Before using the valve, make sure that the system to valve
is used with is certified to comply with the relevant directives
and/or regulations.
1.4 Before installing and using the valve for the first time, we
suggest you check that it is undamaged and make sure that the
rated features correspond to the required ones. If this is not the
case, do not use the valve and contact the Customer Service
Department.
1.5 In order to install the valve correctly, follow the instructions for
the water inlet, outlet and by-pass connections, as stated in
this manual and/or the valve itself.
2. I STRUCTIO S FOR PRESSURE SETTI G
2.1 In order to obtain a correct adjustment and consequently a
proper functioning of the valve, always make sure that, when
working at the maximum pressure, the valve by-pass keeps
releasing a quantity of water equal to 5% of the total flow rate.
In case the flow rate at the by-pass is close to zero or exceeds
15% of the maximum flow rate, this could cause failure, early
wear and result in situations of danger.
The positions mentioned in the following instructions refer to
those shown in the parts list on page 2.
2.2 Connect the valve to the water system and follow these
steps:
2.2.1 Loosen the nut (pos. 2).
2.2.2 Unscrew the nut (pos. 1) in order to completely release
the spring.
2.2.3 Open the gun or the water control device and start the
system. ake sure the air contained in it is fully ejected.
2.2.4 Keeping the gun or the water control device open, start
adjusting the pressure by screwing down the nut (pos. 1).
Alternate the adjusting operations with a few openings and
closings of the gun or of the control device. When the desired
pressure has been reached, open and close the gun/control device
a few times again in order to stabilize the various
components (seals, springs, etc.). Check the pressure valve
again and correct if necessary.
2.2.5 Screw down the lower nut (pos. 2) up to contact with the
body.
2.2.6 In order to obtain working pressures lower than the
maximum set pressure, unscrew the nut (pos. 1).
3. WAR I GS
3.1 The installation and the setting of the maximum pressure must
be made by qualified staff only, who must have the required skills
to handle high pressure systems and be informed of the
operating and safety instructions contained in this manual.
3.2 The installer must provide the ultimate consumer with the
proper instructions for the correct use of the system the valve is
used in connection with.
3.3 Use soft and filtered water only. In case of salt water and/or of
water containing solid particles of a size exceeding 360µm, the
internal components of the valve will be subject to quick wear;
furthermore, this might compromise the correct functioning of the
valve. Addition agents can be used in the water, provided that
they are biodegradable and always complying with the regulations
in force in the country where the valve is used.
3.4 In the systems for hot water production, the
temperature of the liquid that comes into contact with
the valve must always be lower than the value stated
in this instruction manual and/or indicated on the valve
itself. Avoid the formation of steam or overheated
water.
IMPORTA T: When the temperature of the liquid is
close to the maximum value, the outside temperature
of the valve body is only slightly lower. Therefore,
take care in case of contact with the hot surface.
Ref 300931 Rev. A
08-13
